Quelle sis_accel.c Sprache: unbekannt
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* SiS 300 / 540 / 630 [ S ] / 730 [ S ] ,
* SiS 315 [ E | PRO ] / 550 / [ M ] 650 / 651 / [ M ] 661 [ F | M ] X / 740 / [ M ] 741 [ GX ] / 330 / [ M ] 760 [ GX ] ,
* XGI V3XT / V5 / V8 , Z7
* frame buffer driver for Linux kernels > = 2 . 4 . 14 and > = 2 . 6 . 3
*
* 2 D acceleration part
*
* Based on the XFree86 / X . org driver which is
* Copyright ( C ) 2001 - 2005 by Thomas Winischhofer , Vienna , Austria
*
* Author : Thomas Winischhofer < thomas @ winischhofer . net >
* ( see http : //www.winischhofer.net/
* for more information and updates )
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/fb.h>
#include <linux/ioport.h>
#include <linux/types.h>
#include <asm /io.h>
#include "sis.h"
#include "sis_accel.h"
static const u8 sisALUConv[] =
{
0 x00, /* dest = 0; 0, GXclear, 0 */
0 x88, /* dest &= src; DSa, GXand, 0x1 */
0 x44, /* dest = src & ~dest; SDna, GXandReverse, 0x2 */
0 xCC, /* dest = src; S, GXcopy, 0x3 */
0 x22, /* dest &= ~src; DSna, GXandInverted, 0x4 */
0 xAA, /* dest = dest; D, GXnoop, 0x5 */
0 x66, /* dest = ^src; DSx, GXxor, 0x6 */
0 xEE, /* dest |= src; DSo, GXor, 0x7 */
0 x11, /* dest = ~src & ~dest; DSon, GXnor, 0x8 */
0 x99, /* dest ^= ~src ; DSxn, GXequiv, 0x9 */
0 x55, /* dest = ~dest; Dn, GXInvert, 0xA */
0 xDD, /* dest = src|~dest ; SDno, GXorReverse, 0xB */
0 x33, /* dest = ~src; Sn, GXcopyInverted, 0xC */
0 xBB, /* dest |= ~src; DSno, GXorInverted, 0xD */
0 x77, /* dest = ~src|~dest; DSan, GXnand, 0xE */
0 xFF, /* dest = 0xFF; 1, GXset, 0xF */
};
/* same ROP but with Pattern as Source */
static const u8 sisPatALUConv[] =
{
0 x00, /* dest = 0; 0, GXclear, 0 */
0 xA0, /* dest &= src; DPa, GXand, 0x1 */
0 x50, /* dest = src & ~dest; PDna, GXandReverse, 0x2 */
0 xF0, /* dest = src; P, GXcopy, 0x3 */
0 x0A, /* dest &= ~src; DPna, GXandInverted, 0x4 */
0 xAA, /* dest = dest; D, GXnoop, 0x5 */
0 x5A, /* dest = ^src; DPx, GXxor, 0x6 */
0 xFA, /* dest |= src; DPo, GXor, 0x7 */
0 x05, /* dest = ~src & ~dest; DPon, GXnor, 0x8 */
0 xA5, /* dest ^= ~src ; DPxn, GXequiv, 0x9 */
0 x55, /* dest = ~dest; Dn, GXInvert, 0xA */
0 xF5, /* dest = src|~dest ; PDno, GXorReverse, 0xB */
0 x0F, /* dest = ~src; Pn, GXcopyInverted, 0xC */
0 xAF, /* dest |= ~src; DPno, GXorInverted, 0xD */
0 x5F, /* dest = ~src|~dest; DPan, GXnand, 0xE */
0 xFF, /* dest = 0xFF; 1, GXset, 0xF */
};
static const int myrops[] = {
3 , 10 , 3 , 3 , 3 , 3 , 3 , 3 , 3 , 3 , 3 , 3 , 3 , 3 , 3 , 3
};
/* 300 series ----------------------------------------------------- */
#ifdef CONFIG_FB_SIS_300
static void
SiS300Sync(struct sis_video_info *ivideo)
{
SiS300Idle
}
static void
SiS300SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int xdir, int ydir,
int rop, int trans_color)
{
SiS300SetupDSTColorDepth(ivideo->DstColor);
SiS300SetupSRCPitch(ivideo->video_linelength)
SiS300SetupDSTRect(ivideo->video_linelength, 0 xffff)
if (trans_color != -1 ) {
SiS300SetupROP(0 x0A)
SiS300SetupSRCTrans(trans_color)
SiS300SetupCMDFlag(TRANSPARENT_BITBLT)
} else {
SiS300SetupROP(sisALUConv[rop])
}
if (xdir > 0 ) {
SiS300SetupCMDFlag(X_INC)
}
if (ydir > 0 ) {
SiS300SetupCMDFlag(Y_INC)
}
}
static void
SiS300SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x,
int src_y, int dst_x, int dst_y, int width, int height)
{
u32 srcbase = 0 , dstbase = 0 ;
if (src_y >= 2048 ) {
srcbase = ivideo->video_linelength * src_y;
src_y = 0 ;
}
if (dst_y >= 2048 ) {
dstbase = ivideo->video_linelength * dst_y;
dst_y = 0 ;
}
SiS300SetupSRCBase(srcbase);
SiS300SetupDSTBase(dstbase);
if (!(ivideo->CommandReg & X_INC)) {
src_x += width-1 ;
dst_x += width-1 ;
}
if (!(ivideo->CommandReg & Y_INC)) {
src_y += height-1 ;
dst_y += height-1 ;
}
SiS300SetupRect(width, height)
SiS300SetupSRCXY(src_x, src_y)
SiS300SetupDSTXY(dst_x, dst_y)
SiS300DoCMD
}
static void
SiS300SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
{
SiS300SetupPATFG(color)
SiS300SetupDSTRect(ivideo->video_linelength, 0 xffff)
SiS300SetupDSTColorDepth(ivideo->DstColor);
SiS300SetupROP(sisPatALUConv[rop])
SiS300SetupCMDFlag(PATFG)
}
static void
SiS300SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
{
u32 dstbase = 0 ;
if (y >= 2048 ) {
dstbase = ivideo->video_linelength * y;
y = 0 ;
}
SiS300SetupDSTBase(dstbase)
SiS300SetupDSTXY(x,y)
SiS300SetupRect(w,h)
SiS300SetupCMDFlag(X_INC | Y_INC | BITBLT)
SiS300DoCMD
}
#endif
/* 315/330/340 series ---------------------------------------------- */
#ifdef CONFIG_FB_SIS_315
static void
SiS310Sync(struct sis_video_info *ivideo)
{
SiS310Idle
}
static void
SiS310SetupForScreenToScreenCopy(struct sis_video_info *ivideo, int rop, int trans_color)
{
SiS310SetupDSTColorDepth(ivideo->DstColor);
SiS310SetupSRCPitch(ivideo->video_linelength)
SiS310SetupDSTRect(ivideo->video_linelength, 0 x0fff)
if (trans_color != -1 ) {
SiS310SetupROP(0 x0A)
SiS310SetupSRCTrans(trans_color)
SiS310SetupCMDFlag(TRANSPARENT_BITBLT)
} else {
SiS310SetupROP(sisALUConv[rop])
/* Set command - not needed, both 0 */
/* SiSSetupCMDFlag(BITBLT | SRCVIDEO) */
}
SiS310SetupCMDFlag(ivideo->SiS310_AccelDepth)
/* The chip is smart enough to know the direction */
}
static void
SiS310SubsequentScreenToScreenCopy(struct sis_video_info *ivideo, int src_x, int src_y,
int dst_x, int dst_y, int width, int height)
{
u32 srcbase = 0 , dstbase = 0 ;
int mymin = min(src_y, dst_y);
int mymax = max(src_y, dst_y);
/* Although the chip knows the direction to use
* if the source and destination areas overlap ,
* that logic fails if we fiddle with the bitmap
* addresses . Therefore , we check if the source
* and destination blitting areas overlap and
* adapt the bitmap addresses synchronously
* if the coordinates exceed the valid range .
* The areas do not overlap , we do our
* normal check .
*/
if ((mymax - mymin) < height) {
if ((src_y >= 2048 ) || (dst_y >= 2048 )) {
srcbase = ivideo->video_linelength * mymin;
dstbase = ivideo->video_linelength * mymin;
src_y -= mymin;
dst_y -= mymin;
}
} else {
if (src_y >= 2048 ) {
srcbase = ivideo->video_linelength * src_y;
src_y = 0 ;
}
if (dst_y >= 2048 ) {
dstbase = ivideo->video_linelength * dst_y;
dst_y = 0 ;
}
}
srcbase += ivideo->video_offset;
dstbase += ivideo->video_offset;
SiS310SetupSRCBase(srcbase);
SiS310SetupDSTBase(dstbase);
SiS310SetupRect(width, height)
SiS310SetupSRCXY(src_x, src_y)
SiS310SetupDSTXY(dst_x, dst_y)
SiS310DoCMD
}
static void
SiS310SetupForSolidFill(struct sis_video_info *ivideo, u32 color, int rop)
{
SiS310SetupPATFG(color)
SiS310SetupDSTRect(ivideo->video_linelength, 0 x0fff)
SiS310SetupDSTColorDepth(ivideo->DstColor);
SiS310SetupROP(sisPatALUConv[rop])
SiS310SetupCMDFlag(PATFG | ivideo->SiS310_AccelDepth)
}
static void
SiS310SubsequentSolidFillRect(struct sis_video_info *ivideo, int x, int y, int w, int h)
{
u32 dstbase = 0 ;
if (y >= 2048 ) {
dstbase = ivideo->video_linelength * y;
y = 0 ;
}
dstbase += ivideo->video_offset;
SiS310SetupDSTBase(dstbase)
SiS310SetupDSTXY(x,y)
SiS310SetupRect(w,h)
SiS310SetupCMDFlag(BITBLT)
SiS310DoCMD
}
#endif
/* --------------------------------------------------------------------- */
/* The exported routines */
int sisfb_initaccel(struct sis_video_info *ivideo)
{
#ifdef SISFB_USE_SPINLOCKS
spin_lock_init(&ivideo->lockaccel);
#endif
return 0 ;
}
void sisfb_syncaccel(struct sis_video_info *ivideo)
{
if (ivideo->sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
SiS300Sync(ivideo);
#endif
} else {
#ifdef CONFIG_FB_SIS_315
SiS310Sync(ivideo);
#endif
}
}
int fbcon_sis_sync(struct fb_info *info)
{
struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
CRITFLAGS
if ((!ivideo->accel) || (!ivideo->engineok))
return 0 ;
CRITBEGIN
sisfb_syncaccel(ivideo);
CRITEND
return 0 ;
}
void fbcon_sis_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
u32 col = 0 ;
u32 vxres = info->var.xres_virtual;
u32 vyres = info->var.yres_virtual;
int width, height;
CRITFLAGS
if (info->state != FBINFO_STATE_RUNNING)
return ;
if ((!ivideo->accel) || (!ivideo->engineok)) {
cfb_fillrect(info, rect);
return ;
}
if (!rect->width || !rect->height || rect->dx >= vxres || rect->dy >= vyres)
return ;
/* Clipping */
width = ((rect->dx + rect->width) > vxres) ? (vxres - rect->dx) : rect->width;
height = ((rect->dy + rect->height) > vyres) ? (vyres - rect->dy) : rect->height;
switch (info->var.bits_per_pixel) {
case 8 : col = rect->color;
break ;
case 16 :
case 32 : col = ((u32 *)(info->pseudo_palette))[rect->color];
break ;
}
if (ivideo->sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
CRITBEGIN
SiS300SetupForSolidFill(ivideo, col, myrops[rect->rop]);
SiS300SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
CRITEND
#endif
} else {
#ifdef CONFIG_FB_SIS_315
CRITBEGIN
SiS310SetupForSolidFill(ivideo, col, myrops[rect->rop]);
SiS310SubsequentSolidFillRect(ivideo, rect->dx, rect->dy, width, height);
CRITEND
#endif
}
sisfb_syncaccel(ivideo);
}
void fbcon_sis_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
struct sis_video_info *ivideo = (struct sis_video_info *)info->par;
u32 vxres = info->var.xres_virtual;
u32 vyres = info->var.yres_virtual;
int width = area->width;
int height = area->height;
CRITFLAGS
if (info->state != FBINFO_STATE_RUNNING)
return ;
if ((!ivideo->accel) || (!ivideo->engineok)) {
cfb_copyarea(info, area);
return ;
}
if (!width || !height ||
area->sx >= vxres || area->sy >= vyres ||
area->dx >= vxres || area->dy >= vyres)
return ;
/* Clipping */
if ((area->sx + width) > vxres) width = vxres - area->sx;
if ((area->dx + width) > vxres) width = vxres - area->dx;
if ((area->sy + height) > vyres) height = vyres - area->sy;
if ((area->dy + height) > vyres) height = vyres - area->dy;
if (ivideo->sisvga_engine == SIS_300_VGA) {
#ifdef CONFIG_FB_SIS_300
int xdir, ydir;
if (area->sx < area->dx) xdir = 0 ;
else xdir = 1 ;
if (area->sy < area->dy) ydir = 0 ;
else ydir = 1 ;
CRITBEGIN
SiS300SetupForScreenToScreenCopy(ivideo, xdir, ydir, 3 , -1 );
SiS300SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
area->dx, area->dy, width, height);
CRITEND
#endif
} else {
#ifdef CONFIG_FB_SIS_315
CRITBEGIN
SiS310SetupForScreenToScreenCopy(ivideo, 3 , -1 );
SiS310SubsequentScreenToScreenCopy(ivideo, area->sx, area->sy,
area->dx, area->dy, width, height);
CRITEND
#endif
}
sisfb_syncaccel(ivideo);
}
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